Love them both
I bought both the screw lock and autolocking versions of this biner. I didn't want the auto locker, but my local store only had one screw lock version in stock so I grabbed one of each. I have no regrets.
I spent a Saturday belaying kids who were climbing and rapping. I used the autolocker as my belay biner and the screw lock for anchoring me. The autolocker was great for constantly switching rap lines. Ropes move smoothly through the biner. Price is right, and they are not to heavy either.